Hanfland D, Wetzel W E
Abteilung Kinderzahnheilkunde, Zentrum für Zahn-, Mund- und Kieferheilkunde Giessen.
Schweiz Monatsschr Zahnmed. 1995;105(4):461-6.
The free ionic concentration of fluoride of 16 toothpastes for adults, of 5 pastes for children, and of one fluoride gel were analysed straight after production and after 4 months of storage. The fresh products containing fluoride as inorganic salt of hydrofluoric acid or as organic fluoride salt contained more than 65% of the manufacturers declaration of ionic fluoride. In the pastes containing sodiummonofluorphosphate the assessed concentration of free fluoride ions was less than 20% of the declaration. After 4 months of storage more than 75% of the ionic fluoride found in the new products could still be detected. The pastes containing sodiummonofluorphosphate, however, showed an increase of the ionic concentration of fluoride.
对16种成人牙膏、5种儿童牙膏和1种含氟凝胶在生产后及储存4个月后直接进行分析，测定其中氟化物的游离离子浓度。含有氢氟酸无机盐形式或有机氟盐形式氟化物的新产品，其游离离子氟含量超过制造商宣称量的65%。而含有单氟磷酸钠的牙膏中，游离氟离子的评估浓度低于宣称量的20%。储存4个月后，仍能检测到新产品中超过75%的离子氟。然而，含有单氟磷酸钠的牙膏中，氟离子的浓度有所增加。
